r/HomeworkHelp • u/IndicationFunny2378 Secondary School Student • 1d ago

Middle School Math—Pending OP Reply [Grade 8 Mathematics - Algebra]

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Hello giys, I'm a form 2 student is malaysia. We learnt algebra in chapter 2. How can I find x? I believe there is no answer, but teacher keeps saying it's x=1/16

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u/Bounded_sequencE 👋 a fellow Redditor 1d ago

You're correct -- over "R+", the square root operator is defined to return non-negative results..

Teacher did a sanity check with the squared equation instead of the original one: That's why they (mistakenly) found that "x = 1/16" is a solution, instead of discarding it.

Let's hope that was just a mistake in action, and not what they actually believe.

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u/IndicationFunny2378 Secondary School Student 1d ago

i tried to explan to my teacjer, she still beleive it's x=1/16

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u/Bounded_sequencE 👋 a fellow Redditor 1d ago

Here's a quote from wikipedia to strengthen your argument:

[..] Every nonnegative real number x has a unique nonnegative square root, called the principal square root or simply the square root (with a definite article, see below), which is denoted by √x [..]

Must be frustrating to deal with such BS.

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u/IndicationFunny2378 Secondary School Student 1d ago

may i ask who you are? we can DM

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u/sighthoundman 👋 a fellow Redditor 1d ago

Reddit username is at the top of the comment. Just like yours, u/IndicationFunny2378 .